The most common and most likely answer to this crossword clue is the 4 letter word DANG
D
A
N
G
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The straight part
We know that "once beaten" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case once beaten = dang.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DANG mean?
DANG noun- A damn, a negligible quantity, minimal consideration.
- Damn.
- Damn.
- Damn.
- To hit or strike.
- To dash; to throw violently.
- To inflict minor damage upon, especially by hitting or striking.
- To fire or reject.
- To deduct, as points, from another, in the manner of a penalty; to penalize.
- To mishit (a golf ball).
- To dash.